US7860146B2 - Adaptative multi-carrier code division multiple access - Google Patents

Adaptative multi-carrier code division multiple access Download PDF

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US7860146B2
US7860146B2 US11/482,373 US48237306A US7860146B2 US 7860146 B2 US7860146 B2 US 7860146B2 US 48237306 A US48237306 A US 48237306A US 7860146 B2 US7860146 B2 US 7860146B2
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cdma
carrier
amc
carriers
performance metric
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US20080008081A1 (en
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Jose Abad Molina
Juan Carlos Riveiro Insua
Jonathan Ephraim David Hurwitz
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Avago Technologies International Sales Pte Ltd
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Priority to EP07835989A priority patent/EP2039049A2/fr
Priority to PCT/US2007/015508 priority patent/WO2008005507A2/fr
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Priority to US12/771,805 priority patent/US8520715B2/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H04L5/0046—Determination of how many bits are transmitted on different sub-channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023—Interference mitigation or co-ordination
    • H04J11/0026—Interference mitigation or co-ordination of multi-user interference
    • H04J11/003—Interference mitigation or co-ordination of multi-user interference at the transmitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/0022—PN, e.g. Kronecker
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0077—Multicode, e.g. multiple codes assigned to one user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0212—Channel estimation of impulse response
    • H04L25/0216—Channel estimation of impulse response with estimation of channel length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
    • H04L27/3411—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power reducing the peak to average power ratio or the mean power of the constellation; Arrangements for increasing the shape gain of a signal set
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0016—Time-frequency-code
    • H04L5/0021—Time-frequency-code in which codes are applied as a frequency-domain sequences, e.g. MC-CDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
    • H04B2203/5416—Methods of transmitting or receiving signals via power distribution lines by adding signals to the wave form of the power source
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
    • H04B2203/5425—Methods of transmitting or receiving signals via power distribution lines improving S/N by matching impedance, noise reduction, gain control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H04L5/0085—Timing of allocation when channel conditions change

Definitions

  • the present invention relates generally to communication signal processing and more particularly to systems and methods for adaptative multi-carrier code division multiple access.
  • CDMA Code Division Multiple Access
  • CDMA provides greater capacity and security in a variety of communications systems such as radio systems, networking systems, and wireless communications systems.
  • One limitation with CDMA is the difficulty in achieving high performance due to channel impairments.
  • Orthogonal Frequency Division Multiplexing (OFDM) splits a datastream into multiple radio frequency channels, which are each sent over sub-carrier frequencies that are orthogonal to one another.
  • OFDM has been used in residential power line communications and in Asymmetric Digital Subscriber Line communications.
  • One example of a power line communication system using OFDM uses a large number of carriers that is greater than 1000 to achieve 200 Mbps. Because of the large number of carriers, the OFDM communication system has a high peak-to-average ratio. This OFDM communication system is robust against delay spread (cyclic prefix) and has high throughput.
  • One limitation with OFDM is the high cost to achieve this high throughput.
  • This example of a residential power line communication system uses a 2-30 MHz band that has a high delay spread and is regulated for injection of high power spectral density (PSD). With a high PSD, dynamic notches or power suppression are typically implemented to avoid interferences over amateur radio communications. In this example, there is high spectral efficiency but increasing performance such as beyond 9 bit/Hz increases costs.
  • PSD power spectral density
  • Multi-Carrier Code Division Multiple Access results in Multi-Carrier Code Division Multiple Access (MC-CDMA).
  • MC-CDMA Multi-Carrier Code Division Multiple Access
  • each symbol is spread over multiple carriers with a special code, or each symbol is spread over the same frequency over time.
  • One limitation is that high performance cannot be achieved due to channel impairments.
  • a system for performing adaptative multi-carrier code division multiple access includes first circuitry and modulator circuitry.
  • the first circuitry determines a channel performance metric for each of a plurality of channels.
  • the first circuitry determines at least one parameter of bit loading for each of the channels based on the channel performance metric.
  • the modulator circuitry modulates AMC-CDMA signals using the parameters for bit loading in each of the channels for transmission over a wired connection.
  • the parameters of bit loading may be a number of code division multiple access sequences over a carrier, a length of a code division multiple access sequence, and a number of bits of a constellation of modulation.
  • Some examples of the channel performance metric are signal-to-noise ratio and bit error rate.
  • the wired connection may be a power line connection, where the frequencies of the AMC-CDMA signals are above 30 MHz.
  • a method for performing AMC-CDMA includes the steps of determining a channel performance metric for each of a plurality of channels and determining at least one parameter of bit loading for each of the channels based on the channel performance metric. The method also includes modulating AMC-CDMA signals using the parameters for each of the channels and transmitting the AMC-CDMA signals over a wired connection.
  • AMC-CDMA provides adaptive modulation for multiple network nodes according to the channel quality.
  • Another advantage is the low implementation cost of AMC-CDMA based on increasing the number of CDMA sequences, which increases the number of carriers but not the number of FFT points.
  • FIG. 1 is an illustration of a communication system in an embodiment of the invention.
  • FIG. 2 is an illustration of a transmitter in an embodiment of the invention.
  • FIG. 3 is an illustration of a receiver in an embodiment of the invention.
  • FIG. 4 is a noise power spectrum graph of frequency (in MHz) vs. Power Spectral Density (PSD) (in dBm/Hz) from an embodiment of the invention.
  • PSD Power Spectral Density
  • FIG. 5 is a channel response graph from an embodiment of the invention.
  • a system for performing adaptative multi-carrier code division multiple access includes first circuitry and modulator circuitry.
  • the first circuitry determines a channel performance metric for each of a plurality of channels.
  • the first circuitry determines at least one parameter of bit loading for each of the channels based on the channel performance metric.
  • the modulator circuitry modulates AMC-CDMA signals using the parameters for bit loading in each of the channels for transmission over a wired connection.
  • AMC-CDMA Adaptative Multi Carrier Code Division Multiple Access
  • CDMA is modulation of multi-carriers using CDMA that applies a different bit loading in each carrier according to channel performance metrics in every carrier.
  • One example of a channel performance metric is SNR.
  • CDMA is used to modulate and multiplex different bits per each carrier instead of using standard modulation such as M-QAM and M-DPSK.
  • AMC-CDMA provides adaptive modulation for multiple network nodes according to the channel quality.
  • Another advantage is the low implementation cost of AMC-CDMA based on increasing the number of CDMA sequences, which increases the number of carriers but not the number of FFT points.
  • Some other advantages are the low Power Spectral Density (PSD) from spread spectrum systems and the robustness against frequency selective channels from OFDM modulations.
  • PSD Power Spectral Density
  • the AMC-CDMA also allows several users at the same time by advantageously using different frequencies and allows the same frequencies with different codes. By multiplexing several users at the same time, every user is either using different carriers in frequency or in code, having a different set of code per each user. In multipoint to multipoint applications, allowing several users at the same time can be important, where the latency is an important factor from the application and cost point of view. This advantage may be especially important in power line communications where the network topologies can be mesh/adhoc networks (where every node can be a repeater).
  • FIG. 1 depicts an illustration of a communication system 100 in an embodiment of the invention.
  • the communication system 100 includes a transmitter 105 , a receiver 110 , a receiver 120 , and a receiver 130 .
  • the transmitter 105 is coupled to the receiver 110 , the receiver 120 , and the receiver 130 by power grid channel 115 .
  • FIGS. 1-3 depict an example of communication from the transmitter 110 to the receivers 110 , 120 , and 130 .
  • Other embodiments may include communications between multiple transmitters and multiple receivers.
  • other embodiments may include transceivers that transmit and receive. While there are numerous variations where the communications can be transmitted to and received from, the figures below describe one example of communication from the transmitter 105 to the receivers 110 , 120 , and 130 for the sake of simplicity.
  • FIGS. 1-3 depict one example of communications in a residential power line communication system.
  • the residential power line communication system has two frequency bands.
  • a first low band operates in the frequency range of 1 MHz to 30 MHz.
  • This low band is regulated by Electromagnetic Compatibility (EMC) regulations for power lines.
  • the high band is a non-regulated frequency band except for general EMC regulations.
  • One advantage of this non-regulated high band is the ability to allow for low power spectral density.
  • the AMC-CDMA is used in the high band. In this high band, the AMC-CDMA modulation is used to transmit high data rate over a power line, while minimizing the injected power and maximizing the data rate.
  • non-regulated band By using a non-regulated band for power line communications, the transmission levels allowed in this non-regulated band are much lower than in the regulated band.
  • Other embodiments may employ AMC-CDMA in bands other than just the high, non-regulated band.
  • other embodiments may employ AMC-CDMA in other wired and/or wireless communications systems besides power line communications.
  • One example of a wired communications system includes coaxial connections.
  • the transmitter 105 is any device or system configured to encode signals by AMC-CDMA and transmit those signals.
  • One example of the transmitter 105 is discussed in more detail below in FIG. 2 .
  • the receivers 110 , 120 , and 130 are any devices or systems configured to receive signals and decode the signals by AMC-CDMA.
  • One example of the receivers 110 , 120 , 130 is discussed in more detail below in FIG. 3 .
  • Graph 150 represents carriers and codes in the bit loading of AMC-CDMA. Codes 1 , 2 , and 3 from carrier 1 are respectively used in communications with the receiver 110 , the receiver 120 , and the receiver 130 . Code 2 from carrier 2 is used in communications with the receiver 120 . Codes 2 and 3 from carrier 3 are respectively used in communications with the receiver 120 and the receiver 130 . Codes 1 , 2 , and 3 from carrier 4 are respectively used in communications with the receiver 110 , the receiver 120 , and the receiver 130 . Code 1 from carrier 5 is used in communications with the receiver 110 . Other codes and carriers are not shown for the sake of simplicity.
  • the graph 150 depicts the variables of AMC-CDMA that can be changed to optimize communications between the transmitter 110 and the receivers 120 , 130 , and 140 .
  • the first variable is a number of bits for each constellation in QAM. For example, in carrier 1 , code 1 has a modulation of 8-QAM, code 2 has a modulation of 64-QAM, and code 3 has a modulation of 256-QAM.
  • Another variable is the length of the CDMA sequence.
  • the codes 1 - 3 in carrier 1 have a length of 8, while the code 2 in carrier 2 has a length of 4.
  • the codes 1 - 3 in channel 4 have a length of 16.
  • FIG. 2 depicts an illustration of a transmitter 200 in an embodiment of the invention.
  • the blocks of the transmitter 200 may represent functional blocks that can be implemented in circuitry such as digital signal processors and field programmable gate arrays, or alternatively, the blocks of the transmitter 200 may represent dedicated circuitry.
  • the transmitter 200 includes a bit loading memory 210 , a pseudo noise (PN) generator 215 , a serial to parallel converter 220 , a modulator 230 , multipliers 235 , a summarizer 240 , and an inverse Fast Fourier Transform (IFFT) 250 .
  • PN pseudo noise
  • IFFT inverse Fast Fourier Transform
  • the transmitter 200 provides adaptive CDMA modulation on top of each carrier.
  • the parameters of the bit loading for CDMA modulation can be changed based on the metrics of the channels' performance such as SNR.
  • This AMC-CDMA increases immunity against delay spread and impulsive noise.
  • the AMC-CDMA also allows multiple users.
  • the AMC-CDMA modulation uses a multi-carrier that applies different bit loading over each carrier.
  • the bit loading memory 210 provides parameters for the AMC-CDMA modulation.
  • the bit loading memory 210 may store these parameters of the AMC-CDMA modulation.
  • circuitry (not shown) executing firmware determines a channel performance metric for each of a plurality of channels through communications between the transmitter 200 and the receiver 300 discussed below in FIG. 3 .
  • a channel performance metric is any measurement or value that is indicative of the operation, quality, condition, or status of a channel in communications.
  • Some examples of channel performance metrics are signal to noise ratio (SNR), bit error rates, attenuation measurements, and other noise measurements.
  • the channel performance metrics comprise the SNRs of every channel.
  • the circuitry also determines at least one parameter of bit loading for each of the channels based on the channel performance metric. The parameters can then be stored in the bit loading memory 210 .
  • a parameter of bit loading is any number or value that indicates how a bit of data is loaded in communications.
  • the four adaptive parameters for bit loading are the number of CDMA sequences over the same frequency carrier, the length of the CDMA sequence, the number of bits of each constellation, and the length of the chip in a CDMA sequence. Varying these parameters can increase the bandwidth of each carrier and the total number of carriers. Some of these parameters may change while other parameters do not change.
  • the first parameter is the number of CDMA sequences per carrier.
  • Each CDMA sequence is the result of the modulation of n-bits of information by one CDMA sequence.
  • M-CDMA sequence In every carrier, it can be multiplexed as a maximum (i.e. to maintain orthogonality among all codes) M-CDMA sequence, where M is the result of 2 ⁇ L and L is the CDMA length or the number of multi-carrier symbols that are included in the CDMA sequence.
  • M is the result of 2 ⁇ L
  • L is the CDMA length or the number of multi-carrier symbols that are included in the CDMA sequence.
  • Increasing the number of CDMA sequences increases the number of carriers but not the number of FFT points, which advantageously provides a low implementation cost of AMC-CDMA.
  • AMC-CDMA provides a low cost implementation of a multi-carrier system with a variable number of carriers.
  • K The equation below is for the final number of carriers, K:
  • the second parameter is the length of the CDMA sequence. Changing the length of the CDMA sequence improves robustness versus noise. This parameter can change the modulation in real time to adapt the transmitter 200 to the channels' performance. The time to transmit data and the latency increase, while the processing gain of the system also increases. Thus, the spreading factor of the CDMA sequence can increase, which increases the robustness versus noise and channel delay spread or inter-symbol interference (ISI).
  • ISI inter-symbol interference
  • the third parameter is the number of bits of each constellation or constellation size.
  • AMC-CDMA can provide a multi-carrier system with a high number of carriers but with an implementation cost similar to one with a much lower number of carriers.
  • One possible constraint may be that the robustness versus ISI/delay spread of the channel may be mainly limited by the number of the core multi-carrier modulation.
  • CDMA sequences help to reduce the impact of the ISI.
  • a fourth parameter is the length of the chip in the CDMA sequence. When all the chips have the same length, and the length of the chip is 1, one of the chips of the CDMA in one OFDM symbol is transmitted.
  • the chip length can be varied in integer numbers in order to achieve more robustness against the delay spread and other channel impairments, where the chip of the CDMA is shared during several OFDM symbols. This parameter may be chosen independently for every FFT frequency or point.
  • Bits/carrier n*M /( L *chiplength)
  • the serial to parallel converter 220 receives a gigabit incoming bit stream over link 218 .
  • the serial to parallel converter 220 also receives the number of virtual carriers, K, from the bit loading memory 210 .
  • the number of virtual carriers, K is calculated based on the total number of CDMA sequences and the number of physical carriers.
  • the serial to parallel converter 220 divides the gigabit incoming bit stream into K carriers.
  • the number of carriers is 250 , which is over 200 MHz.
  • This example also has a low constellation size. This example advantageously is robust against the delay spread, has a relatively low peak-to-average ratio (PAR), and has low complexity for an analog front end and a digital front end.
  • PAR peak-to-average ratio
  • the modulator 230 then modulates the carriers based on the Modulator(i) input to result in the modulated carrier signals, a k .
  • Each a k signal is a point in the constellation.
  • the Modulator(i) input indicates the type of modulation and the constellation size of each carrier.
  • Some examples of the modulation schemes are Binary Phase Shifting Key (BPSK), Quaternary Phase Shift Keying (QPSK), and Differential Phase Shift Keying (DPSK).
  • the PN generator 215 generates the PN codes, C j (u).
  • the multipliers 235 multiply the modulated carrier signals, a k with the PN codes, C j (u).
  • the summarizer 240 sums up the dot products of the modulated carrier signals, a k and the PN codes, C j (u) based on the M(i) input.
  • the summarizer 240 groups the virtual carriers for each frequency.
  • the M(i) input is the number of CDMA sequences for a frequency.
  • the summarizer 240 generates the X N (u) signals for the physical carriers.
  • the IFFT 250 then performs an inverse fast fourier transform function on the X N (u) to change from the frequency domain to the time domain.
  • a cyclix prefix insertion block may then append cyclix prefixes to the resulting signal.
  • the resulting signal can then be converted with a digital to analog converter (not shown).
  • the cyclix prefix or guard period may also be not included in the transmitter 200 .
  • FFT can be used to implement the multicarrier modulation on top of the AMC-CDMA. Cordics may also be used instead of FFT to modulate and demodulate each carrier individually.
  • One advantage of this embodiment in FIG. 2 is that 1 Gbps is easy to achieve with 200 MHz and up to 5 bits/Hz. Another advantage is the low complexity of the CDMA (only need to multiply by 1 or ⁇ 1) and the FFT due to the small number of carriers and low number of bits and operations. A further advantage is the low peak-to-average ratio because of the low number of bits in the ADC and DAC converter. Also, the transmitter 200 can work below 0 dB of the SNR with a processing gain of more than 10 dB.
  • FIG. 3 depicts an illustration of a receiver 300 in an embodiment of the invention.
  • the blocks of the receiver 300 may represent functional blocks that can be implemented in circuitry such as digital signal processors and field programmable gate arrays, or alternatively, the blocks of the receiver 300 may represent dedicated circuitry.
  • the receiver 300 includes a bit loading memory 310 , a pseudo noise (PN) generator 315 , an analog to digital converter (ADC) 320 , a fast fourier transform (FFT) 340 , a frequency to CDMA carrier converter 350 , a multiplier 352 , summarizers 354 , switches 356 , a demodulator 360 , a parallel to serial converter 370 , and a synchronization module 380 .
  • PN pseudo noise
  • ADC analog to digital converter
  • FFT fast fourier transform
  • the ADC 320 receives an incoming signal from the transmitter 200 of FIG. 2 .
  • the ADC 320 performs an analog to digital conversion on the incoming signal.
  • a cyclix prefix removing block may then remove the cyclix prefixes from the signal.
  • the FFT 340 then performs a fast fourier transform on the signal resulting in X N (u) signals.
  • the frequency to CDMA carrier converter 350 converts the X N (u) signals from frequency to CDMA carriers based on the M(i) input.
  • the PN generator 315 generates the PN codes, C j (u).
  • the multipliers 352 multiply the carrier signals from the converter 350 with the PN codes, C j (u).
  • the summarizer 354 performs a calculation of
  • the switch 356 switches the signal resulting in signal ⁇ K (m).
  • the demodulator 360 then demodulates the signals ⁇ K (m) based on the input Modulator(i). Some examples of demodulation use QPSK and Differential Quadrature Phase Shift Keying (DQPSK).
  • the parallel to serial converter 370 then performs a parallel to serial conversion.
  • the synchronization module 380 performs synchronization functions to ensure synchronicity with a clock for the receiver 300 .
  • FIG. 4 depicts a noise power spectrum graph of frequency (in MHz) vs. Power Spectral Density (PSD) (in dBm/Hz) from an embodiment of the invention.
  • PSD Power Spectral Density
  • FIG. 4 depicts low noise for a channel operating under good conditions.
  • FIG. 5 depicts a channel response graph of frequency (in kHz) vs. attenuation (in dB) from an embodiment of the invention.
  • the graph in FIG. 5 depicts a line 510 representing a channel under good conditions, a line 520 representing a channel under average conditions, and a line 530 representing a channel under bad conditions.
  • FIGS. 4 and 5 can assist with calculations of signal to noise ratios for channels, which can be used for determining the parameters for AMC-CDMA.

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PCT/US2007/015508 WO2008005507A2 (fr) 2006-07-06 2007-07-06 Accès multiple par répartition en code, adaptatif, multi-porteuse
JP2009518372A JP2010516065A (ja) 2006-07-06 2007-07-06 アダプティブマルチキャリア符号分割多重アクセス
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080043992A1 (en) * 2006-07-25 2008-02-21 Gigle Semiconductor Inc. Feedback impedance control for driving a signal
US20080159358A1 (en) * 2007-01-02 2008-07-03 David Ruiz Unknown Destination Traffic Repetition
US20090232286A1 (en) * 2008-03-14 2009-09-17 Gigle Semiconductor, Ltd. Coupling signal processing circuitry with a wireline communications medium
US20090315700A1 (en) * 2006-07-25 2009-12-24 Jonathan Ephriam David Hurwitz Dual Transformer Communication Interface
US20100265992A1 (en) * 2006-07-06 2010-10-21 Jose Abad Molina Adaptative Multi-Carrier Code Division Multiple Access
US20100329274A1 (en) * 2006-11-21 2010-12-30 Veronica Romero Network Repeater
US20110194626A1 (en) * 2005-10-03 2011-08-11 Juan Carlos Riveiro Multi-Wideband Communications Over Power Lines
US20110205918A1 (en) * 2005-10-03 2011-08-25 Hurwitz Jonathan E D Apparatus for Power Line and Wireless Communications
US8213895B2 (en) 2005-10-03 2012-07-03 Broadcom Europe Limited Multi-wideband communications over multiple mediums within a network
US20130010838A1 (en) * 2010-03-22 2013-01-10 Marvell Hispania, S.L. Communication node and procedure for various means of transmission

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0810855D0 (en) * 2008-06-13 2008-07-23 Gigle Semiconductors Ltd Method system and computer program for improving a communication system
JP2012516634A (ja) * 2009-01-30 2012-07-19 トムソン ライセンシング セットトップボックスにおいてホームネットワーク通信とブロードキャスト受信とを一体化するシステム及び方法
CN102195677B (zh) 2010-03-10 2014-03-12 青岛东软载波科技股份有限公司 接收电路、发送电路、微控制器及电力线载波通信方法
CN101827059B (zh) * 2010-03-18 2013-01-30 清华大学 基于多载波伪随机序列的数字信号传输方法及系统
GB2491876A (en) * 2011-06-15 2012-12-19 Xsilon Ltd Bit loading in a time and frequency/code divisional multiplexing method
US20130028306A1 (en) * 2011-07-26 2013-01-31 Cristina Seibert Systems and methods for multimode signal acquisition
US9647801B2 (en) 2013-12-27 2017-05-09 Arris Enterprises, Inc. Method for selecting modulation tiers for transmissions over an orthogonal frequency division multiplexed (OFDM) channel
US9647786B2 (en) 2013-12-27 2017-05-09 Arris Enterprises, Inc. Determining bitloading profiles based on sNR measurements
CN203870451U (zh) * 2014-05-23 2014-10-08 广东博宇集团有限公司 一种应用于水族箱或花园池塘电器的控制装置
WO2016050765A1 (fr) * 2014-09-30 2016-04-07 British Telecommunications Public Limited Company Procédé et appareil de transmission et réception de signaux sur des paires de fils
US10574292B2 (en) 2016-08-29 2020-02-25 British Telecommunications Public Limited Company Method and apparatus for transmitting data over metallic wire pairs
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US11201969B2 (en) 2016-11-08 2021-12-14 British Telecommunications Public Limited Company Method and apparatus for operating a digital subscriber line arrangement
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TWI641240B (zh) 2017-04-07 2018-11-11 濎通科技股份有限公司 電力線通信裝置及方法

Citations (106)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3379973A (en) 1966-01-10 1968-04-23 Halliburton Co Impedance measuring circuit having the unknown impedance in the feedback path of an amplifier
US3445763A (en) 1965-10-06 1969-05-20 Gen Electric Digital reading impedance measuring arrangement
US4096361A (en) 1977-06-20 1978-06-20 Bell Telephone Laboratories, Incorporated Test apparatus for obtaining impedance settings for hybrid balance networks
US4224483A (en) 1979-03-12 1980-09-23 Bell Telephone Laboratories, Incorporated Electronic loaded/nonloaded telephone loop identification circuit
US4430731A (en) 1980-04-30 1984-02-07 The Manitoba Telephone System Video and data distribution module with subscriber terminal
US4636771A (en) 1984-12-10 1987-01-13 Westinghouse Electric Corp. Power line communications terminal and interface circuit associated therewith
US4636711A (en) 1984-12-04 1987-01-13 Airborne Electronics, Inc. Pulse width modulation control circuit with a variable zero to one hundred percent duty cycle
US4772870A (en) 1986-11-20 1988-09-20 Reyes Ronald R Power line communication system
US4922534A (en) 1985-11-18 1990-05-01 General Datacomm, Inc. Intelligent synchronous modem and communication system incorporating the same
EP0580457A1 (fr) 1992-05-27 1994-01-26 Denis Albert Koubi Méthode et système de transmission d'informations et de signaux analogiques et/ou numériques à large bande utilisant le réseau de distribution de l'énergie électrique comme support de transmission
US5287065A (en) 1991-10-04 1994-02-15 Doble Engineering Company Automatic bridge balancing using controllable impedance in characterizing unknown impedance
US5574748A (en) 1989-08-23 1996-11-12 Intellon Corporation Spread spectrum communications system for network
US5732223A (en) 1991-03-11 1998-03-24 Future Domain Corporation, Inc. SCSI host adapter with shared command and data buffer
US5777544A (en) 1997-03-17 1998-07-07 Intellon Corporation Apparatus and method for controlling data communications having combination of wide and narrow band frequency protocols
US5880631A (en) 1996-02-28 1999-03-09 Qualcomm Incorporated High dynamic range variable gain amplifier
US5929896A (en) 1989-07-14 1999-07-27 Inline Connection Corporation RF broadcast system utilizing internal telephone lines
US5929750A (en) 1992-10-22 1999-07-27 Norweb Plc Transmission network and filter therefor
US5978371A (en) 1997-03-31 1999-11-02 Abb Power T&D Company Inc. Communications module base repeater
US6014386A (en) 1989-10-30 2000-01-11 Videocom, Inc. System and method for high speed communication of video, voice and error-free data over in-wall wiring
US6215987B1 (en) 1997-06-06 2001-04-10 Nec Corporation Mobile communication transmitter capable of selectively activating amplifiers
US6243413B1 (en) 1998-04-03 2001-06-05 International Business Machines Corporation Modular home-networking communication system and method using disparate communication channels
EP1134909A1 (fr) 2000-03-14 2001-09-19 Biwave Technologies Dispositif de transmission sur cable unique pour signaux et alimentation d'un système de surveillance
WO2001095518A2 (fr) 2000-06-07 2001-12-13 Conexant Systems, Inc. Procede et appareil de modulation a double bande pour systemes de reseaux de communication par lignes electriques
US20020026528A1 (en) 2000-08-24 2002-02-28 Lo Kwoktung B. System and method for selectively bridging and routing data packets between multiple networks
US6353628B1 (en) 1998-12-15 2002-03-05 Nortel Networks Limited Apparatus, method and system having reduced power consumption in a multi-carrier wireline environment
US6373377B1 (en) 2000-10-05 2002-04-16 Conexant Systems, Inc. Power supply with digital data coupling for power-line networking
US6407987B1 (en) 1989-04-28 2002-06-18 Wire21, Inc. Transformer coupler for communication over various lines
US6411163B1 (en) 2000-08-14 2002-06-25 Intersil Americas Inc. Transconductance amplifier circuit
US20020145996A1 (en) 2000-04-07 2002-10-10 Robinson Timothy B. Method and apparatus for optimizing signal transformation in a frame-based communications network
US20020154000A1 (en) 2001-02-14 2002-10-24 Kline Paul A. Data communication over a power line
US20020174423A1 (en) 2001-05-17 2002-11-21 David Fifield Apparatus for transporting home networking frame-based communications signals over coaxial cables
US20020181437A1 (en) 2001-04-26 2002-12-05 Ntt Docomo, Inc Data link transmission control methods, mobile communication systems, data link transmission control apparatus, base stations, mobile stations, mobile station control programs, and computer-readable recording media
US20030016123A1 (en) 2000-03-24 2003-01-23 Wolfgang Tager Powerline data communication
WO2003015291A2 (fr) 2001-08-04 2003-02-20 Enikia Llc Systeme de gestion et de controle des frequences
US20030062990A1 (en) 2001-08-30 2003-04-03 Schaeffer Donald Joseph Powerline bridge apparatus
US20030114153A1 (en) 2001-11-20 2003-06-19 Shaver Donald P. Universal broadband home network for scalable IEEE 802.11 based wireless and wireline networking
US20030129978A1 (en) 2001-11-27 2003-07-10 Sony Corporation Communication system, communication terminal and communication method
US6593868B2 (en) 2000-08-07 2003-07-15 Infineon Technologies Ag Differential digital/analog converter
US20030133473A1 (en) 2001-08-04 2003-07-17 Manis Constantine N. Power line communication system
US20030169155A1 (en) 2000-04-14 2003-09-11 Mollenkopf James Douglas Power line communication system and method of using the same
WO2003077443A1 (fr) 2002-03-12 2003-09-18 Philips Intellectual Property & Standards Gmbh Repeteur pour systeme de communication par ligne electrique
US20030184433A1 (en) 2000-08-14 2003-10-02 Yeshayahu Zalitzky Power line communication system
US20030203721A1 (en) * 2002-04-25 2003-10-30 Raytheon Company Adaptive air interface waveform
US20030224728A1 (en) 2002-06-03 2003-12-04 Tomi Heinonen Bluetooth access point and remote bluetooth modules for powerline based networking
US20040003338A1 (en) 2002-06-26 2004-01-01 Kostoff Stanley J. Powerline network flood control restriction
US20040022304A1 (en) 2002-06-21 2004-02-05 John Santhoff Ultra-wideband communication though local power lines
EP1388954A2 (fr) * 2001-04-19 2004-02-11 Diseno de Sistemas en Silicio S.A. Procede d'acces et de transmission multiples dans un systeme point a multipoint sur reseau electrique
US20040032320A1 (en) 2001-06-12 2004-02-19 Main.Net Communications Ltd. Information transmission over power lines
US20040047427A1 (en) 2000-12-20 2004-03-11 Klaus Dostert Method and device for transmitting data on at least one electrical power supply line
US20040056734A1 (en) 2001-05-18 2004-03-25 Davidow Clifford A. Medium voltage signal coupling structure for last leg power grid high-speed data network
US20040077353A1 (en) 2000-03-06 2004-04-22 Mahany Ronald L. Spread spectrum transceiver module utilizing multiple mode transmission
US20040107588A1 (en) 2002-12-06 2004-06-10 Jian-Hua Pu Laser meter
US20040113757A1 (en) 2002-12-10 2004-06-17 White Melvin Joseph Power line communication system and method of operating the same
US20040113756A1 (en) 2002-12-10 2004-06-17 Mollenkopf James Douglas Device and method for coupling with electrical distribution network infrastructure to provide communications
US20040174851A1 (en) 2001-07-17 2004-09-09 Yeshayahu Zalitzky Dual purpose power line modem
US20040213237A1 (en) 2000-06-29 2004-10-28 Toshikazu Yasue Network authentication apparatus and network authentication system
US20040220766A1 (en) 2003-04-01 2004-11-04 Harbord Philip James Method and apparatus for generating an electronic test signal
WO2004100392A1 (fr) 2003-04-30 2004-11-18 Spidcom Technologies Procede de transmission de donnees par courant porteur
US20040246107A1 (en) 2001-02-14 2004-12-09 Current Technologies, L.L.C. Power line communication system and method of using the same
US20050018668A1 (en) 2003-07-24 2005-01-27 Cheriton David R. Method and apparatus for processing duplicate packets
US20050020227A1 (en) 2003-07-22 2005-01-27 Masahiro Kumagawa High frequency variable gain amplification device, control device, high frequency variable gain frequency-conversion device, and communication device
US20050031047A1 (en) * 2003-08-08 2005-02-10 Maltsev Alexander A. Adaptive multicarrier wireless communication system, apparatus and associated methods
WO2005039070A2 (fr) 2003-10-15 2005-04-28 General Electric Company Compensation de nuls dans un systeme de communication par reseau electrique
US20050089061A1 (en) 2003-08-28 2005-04-28 Oleg Logvinov Joint powerline/ultra-wide band system
US20050094647A1 (en) 2000-08-17 2005-05-05 Koichi Hata Method and apparatus for header compression
EP1531568A1 (fr) * 2002-08-23 2005-05-18 Matsushita Electric Industrial Co., Ltd. Dispositif de transmission a multiplexage par repartition orthogonale de la frequence et acces multiple par repartition en code et procede de transmission a multiplexage frequentiel optique et acces multiple par repartition de code
EP1548974A2 (fr) * 2003-12-25 2005-06-29 NTT DoCoMo, Inc. Système de radiocommunication, émetteur, récepteur et procédé de radiocommunication
US20050141473A1 (en) * 2003-12-27 2005-06-30 Kwang-Jae Lim Adaptive downlink packet transmission method in multicarrier CDMA system
US20050143973A1 (en) 1999-11-26 2005-06-30 Matsushita Electric Industrial Co., Ltd. Digital signal sub-band separating/combining apparatus achieving band-separation and band-combining filtering processing with reduced amount of group delay
US20050157670A1 (en) * 2004-01-16 2005-07-21 Nokia Corporation Multiple user adaptive modulation scheme for MC-CDMA
US20050174950A1 (en) 2004-02-09 2005-08-11 Sharp Laboratories Of America, Inc. Distributed network organization and topology discovery in ad-hoc network
US20050190826A1 (en) * 2004-02-26 2005-09-01 Alcatel Digital subscriber line modem with bitloading using channel condition model
EP1432138B1 (fr) 2002-12-19 2005-09-28 Laboratoire Europeen ADSL Procédé et méthode de diffusion de médias numériques
US20050213874A1 (en) 2001-02-14 2005-09-29 Kline Paul A Power line communication system and method
US6957086B2 (en) 2002-05-01 2005-10-18 Microsoft Corporation Method for wireless capability discovery and protocol negotiation, and wireless device including same
US20050249245A1 (en) 2004-05-06 2005-11-10 Serconet Ltd. System and method for carrying a wireless based signal over wiring
US6985715B2 (en) 2003-05-29 2006-01-10 Amperion, Inc. Method and device for frequency translation in powerline communications
WO2006017743A2 (fr) 2004-08-04 2006-02-16 Quadlogic Controls Corporation Procede et systeme de couplage de signaux radiofrequence a des lignes de puissance a moyenne tension avec un dispositif a accord automatique
US7005943B2 (en) 2002-10-17 2006-02-28 Ambient Corporation Filter for segmenting power lines for communications
US20060045066A1 (en) 2004-08-31 2006-03-02 Samsung Electronics Co., Ltd. Flooding method in ad-hoc network
US20060097574A1 (en) 2004-10-26 2006-05-11 Gidge Brett D Power line communications device and method of use
US20060106961A1 (en) 2000-08-28 2006-05-18 Nec Corporation Streaming data transfer system and repeater therefor
US7053756B2 (en) 2001-12-21 2006-05-30 Current Technologies, Llc Facilitating communication of data signals on electric power systems
US20060120399A1 (en) 2003-06-18 2006-06-08 Claret Jorge V B Method enabling multiple communication nodes to access a transmission means on an electrical grid
US20060126617A1 (en) 2004-12-15 2006-06-15 Cregg Daniel B Mesh network of intelligent devices communicating via powerline and radio frequency
US20060146866A1 (en) 2003-04-08 2006-07-06 Stephan Horvath System and method for data communication over power lines
US7075414B2 (en) 2003-05-13 2006-07-11 Current Technologies, Llc Device and method for communicating data signals through multiple power line conductors
WO2006074174A1 (fr) 2005-01-03 2006-07-13 Demian Martin Bande d'alimentation de courant alternatif presentant une repetition et une gestion de reseau
US7079537B1 (en) 2000-04-25 2006-07-18 Advanced Micro Devices, Inc. Layer 3 switching logic architecture in an integrated network switch
US20060176898A1 (en) 2005-02-10 2006-08-10 Asoka Usa Corporation Powerline communication system and method using coupler design for additional users
US20060291575A1 (en) 2003-07-03 2006-12-28 Berkman William H Power Line Communication System and Method
US20070002771A1 (en) 2005-06-21 2007-01-04 Berkman William H Power line communication rate limiting system and method
US20070008972A1 (en) 2005-07-11 2007-01-11 Mks Instruments, Inc. Address-transparent device and method
US20070025386A1 (en) 2005-07-27 2007-02-01 Neal Riedel Bandwidth management in a powerline network
US20070060151A1 (en) 2005-09-09 2007-03-15 Huitai Development Corporation Power Line Communication System
US20070076595A1 (en) 2005-09-30 2007-04-05 Samsung Electronics Co., Ltd. Power line communication method and apparatus
US7221196B2 (en) 2003-12-05 2007-05-22 Aquantia Corporation Low-power low-voltage multi-level variable-resistor line driver
US7248148B2 (en) 2000-08-09 2007-07-24 Current Technologies, Llc Power line coupling device and method of using the same
EP1351408B1 (fr) 2000-12-18 2007-08-08 Diseno de Sistemas en Silicio S.A. Systeme et procede de transmission numerique de donnees point a multipoint sur un reseau electrique
US7269403B1 (en) * 2004-06-03 2007-09-11 Miao George J Dual-mode wireless and wired power line communications
US20070268124A1 (en) 2005-04-04 2007-11-22 Berkman William H Power Line Communications System and Method
US20080001801A1 (en) 2004-11-19 2008-01-03 Nguyen Khiem Return-to-hold switching scheme for dac output stage
US7391317B2 (en) 2004-09-08 2008-06-24 Satius, Inc. Apparatus and method for transmitting digital data over various communication media
US20090022175A1 (en) 2003-09-23 2009-01-22 Arkados, Inc. Integrated universal network adapter
US7602220B1 (en) 2008-06-24 2009-10-13 Gigle Semiconductor, Ltd. Resistor-input transconductor including common-mode compensation
US7725096B2 (en) 2005-10-03 2010-05-25 Gigle Semiconductor Sl Multi-wideband communications over power lines

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7076168B1 (en) * 1998-02-12 2006-07-11 Aquity, Llc Method and apparatus for using multicarrier interferometry to enhance optical fiber communications
JP4142917B2 (ja) * 2002-08-23 2008-09-03 松下電器産業株式会社 Ｃｄｍａ送信装置及びｏｆｄｍ−ｃｄｍａ送信装置
ITPI20030063A1 (it) * 2003-08-21 2005-02-22 Consorzio Pisa Ricerche Metodo di trasmissione vdsl utilizzante una modulazione
WO2005081439A1 (fr) * 2004-02-13 2005-09-01 Neocific, Inc. Procedes et dispositif pour des systemes de communication a porteuses multiples comportant une transmission et une retroaction adaptatives

Patent Citations (111)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3445763A (en) 1965-10-06 1969-05-20 Gen Electric Digital reading impedance measuring arrangement
US3379973A (en) 1966-01-10 1968-04-23 Halliburton Co Impedance measuring circuit having the unknown impedance in the feedback path of an amplifier
US4096361A (en) 1977-06-20 1978-06-20 Bell Telephone Laboratories, Incorporated Test apparatus for obtaining impedance settings for hybrid balance networks
US4224483A (en) 1979-03-12 1980-09-23 Bell Telephone Laboratories, Incorporated Electronic loaded/nonloaded telephone loop identification circuit
US4430731A (en) 1980-04-30 1984-02-07 The Manitoba Telephone System Video and data distribution module with subscriber terminal
US4636711A (en) 1984-12-04 1987-01-13 Airborne Electronics, Inc. Pulse width modulation control circuit with a variable zero to one hundred percent duty cycle
US4636771A (en) 1984-12-10 1987-01-13 Westinghouse Electric Corp. Power line communications terminal and interface circuit associated therewith
US4922534A (en) 1985-11-18 1990-05-01 General Datacomm, Inc. Intelligent synchronous modem and communication system incorporating the same
US4772870A (en) 1986-11-20 1988-09-20 Reyes Ronald R Power line communication system
US6407987B1 (en) 1989-04-28 2002-06-18 Wire21, Inc. Transformer coupler for communication over various lines
US5929896A (en) 1989-07-14 1999-07-27 Inline Connection Corporation RF broadcast system utilizing internal telephone lines
US5574748A (en) 1989-08-23 1996-11-12 Intellon Corporation Spread spectrum communications system for network
US6014386A (en) 1989-10-30 2000-01-11 Videocom, Inc. System and method for high speed communication of video, voice and error-free data over in-wall wiring
US5732223A (en) 1991-03-11 1998-03-24 Future Domain Corporation, Inc. SCSI host adapter with shared command and data buffer
US5287065A (en) 1991-10-04 1994-02-15 Doble Engineering Company Automatic bridge balancing using controllable impedance in characterizing unknown impedance
EP0580457A1 (fr) 1992-05-27 1994-01-26 Denis Albert Koubi Méthode et système de transmission d'informations et de signaux analogiques et/ou numériques à large bande utilisant le réseau de distribution de l'énergie électrique comme support de transmission
US5929750A (en) 1992-10-22 1999-07-27 Norweb Plc Transmission network and filter therefor
US5933071A (en) 1992-10-22 1999-08-03 Norweb Plc Electricity distribution and/or power transmission network and filter for telecommunication over power lines
US5880631A (en) 1996-02-28 1999-03-09 Qualcomm Incorporated High dynamic range variable gain amplifier
US5777544A (en) 1997-03-17 1998-07-07 Intellon Corporation Apparatus and method for controlling data communications having combination of wide and narrow band frequency protocols
US5978371A (en) 1997-03-31 1999-11-02 Abb Power T&D Company Inc. Communications module base repeater
US6215987B1 (en) 1997-06-06 2001-04-10 Nec Corporation Mobile communication transmitter capable of selectively activating amplifiers
US6243413B1 (en) 1998-04-03 2001-06-05 International Business Machines Corporation Modular home-networking communication system and method using disparate communication channels
US6353628B1 (en) 1998-12-15 2002-03-05 Nortel Networks Limited Apparatus, method and system having reduced power consumption in a multi-carrier wireline environment
US20050143973A1 (en) 1999-11-26 2005-06-30 Matsushita Electric Industrial Co., Ltd. Digital signal sub-band separating/combining apparatus achieving band-separation and band-combining filtering processing with reduced amount of group delay
US20040077353A1 (en) 2000-03-06 2004-04-22 Mahany Ronald L. Spread spectrum transceiver module utilizing multiple mode transmission
EP1134909A1 (fr) 2000-03-14 2001-09-19 Biwave Technologies Dispositif de transmission sur cable unique pour signaux et alimentation d'un système de surveillance
US20030016123A1 (en) 2000-03-24 2003-01-23 Wolfgang Tager Powerline data communication
US20020145996A1 (en) 2000-04-07 2002-10-10 Robinson Timothy B. Method and apparatus for optimizing signal transformation in a frame-based communications network
US20030169155A1 (en) 2000-04-14 2003-09-11 Mollenkopf James Douglas Power line communication system and method of using the same
US7079537B1 (en) 2000-04-25 2006-07-18 Advanced Micro Devices, Inc. Layer 3 switching logic architecture in an integrated network switch
US20020010870A1 (en) 2000-06-07 2002-01-24 Gardner Steven Holmsen Method and apparatus for dual-band modulation in powerline communication network systems
WO2001095518A2 (fr) 2000-06-07 2001-12-13 Conexant Systems, Inc. Procede et appareil de modulation a double bande pour systemes de reseaux de communication par lignes electriques
US20040213237A1 (en) 2000-06-29 2004-10-28 Toshikazu Yasue Network authentication apparatus and network authentication system
US6593868B2 (en) 2000-08-07 2003-07-15 Infineon Technologies Ag Differential digital/analog converter
US7248148B2 (en) 2000-08-09 2007-07-24 Current Technologies, Llc Power line coupling device and method of using the same
US6411163B1 (en) 2000-08-14 2002-06-25 Intersil Americas Inc. Transconductance amplifier circuit
US20030184433A1 (en) 2000-08-14 2003-10-02 Yeshayahu Zalitzky Power line communication system
US20050094647A1 (en) 2000-08-17 2005-05-05 Koichi Hata Method and apparatus for header compression
US20020026528A1 (en) 2000-08-24 2002-02-28 Lo Kwoktung B. System and method for selectively bridging and routing data packets between multiple networks
US20060106961A1 (en) 2000-08-28 2006-05-18 Nec Corporation Streaming data transfer system and repeater therefor
US6373377B1 (en) 2000-10-05 2002-04-16 Conexant Systems, Inc. Power supply with digital data coupling for power-line networking
EP1351408B1 (fr) 2000-12-18 2007-08-08 Diseno de Sistemas en Silicio S.A. Systeme et procede de transmission numerique de donnees point a multipoint sur un reseau electrique
US20040047427A1 (en) 2000-12-20 2004-03-11 Klaus Dostert Method and device for transmitting data on at least one electrical power supply line
US20040246107A1 (en) 2001-02-14 2004-12-09 Current Technologies, L.L.C. Power line communication system and method of using the same
US7042351B2 (en) 2001-02-14 2006-05-09 Current Technologies, Llc Data communication over a power line
US20050213874A1 (en) 2001-02-14 2005-09-29 Kline Paul A Power line communication system and method
US20020154000A1 (en) 2001-02-14 2002-10-24 Kline Paul A. Data communication over a power line
EP1388954A2 (fr) * 2001-04-19 2004-02-11 Diseno de Sistemas en Silicio S.A. Procede d'acces et de transmission multiples dans un systeme point a multipoint sur reseau electrique
US20020181437A1 (en) 2001-04-26 2002-12-05 Ntt Docomo, Inc Data link transmission control methods, mobile communication systems, data link transmission control apparatus, base stations, mobile stations, mobile station control programs, and computer-readable recording media
US20020174423A1 (en) 2001-05-17 2002-11-21 David Fifield Apparatus for transporting home networking frame-based communications signals over coaxial cables
US20040056734A1 (en) 2001-05-18 2004-03-25 Davidow Clifford A. Medium voltage signal coupling structure for last leg power grid high-speed data network
US20040032320A1 (en) 2001-06-12 2004-02-19 Main.Net Communications Ltd. Information transmission over power lines
US20040174851A1 (en) 2001-07-17 2004-09-09 Yeshayahu Zalitzky Dual purpose power line modem
WO2003015291A2 (fr) 2001-08-04 2003-02-20 Enikia Llc Systeme de gestion et de controle des frequences
US20030133473A1 (en) 2001-08-04 2003-07-17 Manis Constantine N. Power line communication system
US20030062990A1 (en) 2001-08-30 2003-04-03 Schaeffer Donald Joseph Powerline bridge apparatus
US20030114153A1 (en) 2001-11-20 2003-06-19 Shaver Donald P. Universal broadband home network for scalable IEEE 802.11 based wireless and wireline networking
US20030129978A1 (en) 2001-11-27 2003-07-10 Sony Corporation Communication system, communication terminal and communication method
US7053756B2 (en) 2001-12-21 2006-05-30 Current Technologies, Llc Facilitating communication of data signals on electric power systems
WO2003077443A1 (fr) 2002-03-12 2003-09-18 Philips Intellectual Property & Standards Gmbh Repeteur pour systeme de communication par ligne electrique
US20030203721A1 (en) * 2002-04-25 2003-10-30 Raytheon Company Adaptive air interface waveform
WO2003092212A1 (fr) 2002-04-25 2003-11-06 Raytheon Company Signal hertzien adaptatif
US6957086B2 (en) 2002-05-01 2005-10-18 Microsoft Corporation Method for wireless capability discovery and protocol negotiation, and wireless device including same
US20030224728A1 (en) 2002-06-03 2003-12-04 Tomi Heinonen Bluetooth access point and remote bluetooth modules for powerline based networking
US20040022304A1 (en) 2002-06-21 2004-02-05 John Santhoff Ultra-wideband communication though local power lines
US20040003338A1 (en) 2002-06-26 2004-01-01 Kostoff Stanley J. Powerline network flood control restriction
EP1531568A1 (fr) * 2002-08-23 2005-05-18 Matsushita Electric Industrial Co., Ltd. Dispositif de transmission a multiplexage par repartition orthogonale de la frequence et acces multiple par repartition en code et procede de transmission a multiplexage frequentiel optique et acces multiple par repartition de code
US7005943B2 (en) 2002-10-17 2006-02-28 Ambient Corporation Filter for segmenting power lines for communications
US20040107588A1 (en) 2002-12-06 2004-06-10 Jian-Hua Pu Laser meter
US20040113756A1 (en) 2002-12-10 2004-06-17 Mollenkopf James Douglas Device and method for coupling with electrical distribution network infrastructure to provide communications
US20060038662A1 (en) 2002-12-10 2006-02-23 White Melvin J Ii Power line communication system and method of operating the same
US20040113757A1 (en) 2002-12-10 2004-06-17 White Melvin Joseph Power line communication system and method of operating the same
EP1432138B1 (fr) 2002-12-19 2005-09-28 Laboratoire Europeen ADSL Procédé et méthode de diffusion de médias numériques
US20040220766A1 (en) 2003-04-01 2004-11-04 Harbord Philip James Method and apparatus for generating an electronic test signal
US20060146866A1 (en) 2003-04-08 2006-07-06 Stephan Horvath System and method for data communication over power lines
WO2004100392A1 (fr) 2003-04-30 2004-11-18 Spidcom Technologies Procede de transmission de donnees par courant porteur
US7075414B2 (en) 2003-05-13 2006-07-11 Current Technologies, Llc Device and method for communicating data signals through multiple power line conductors
US6985715B2 (en) 2003-05-29 2006-01-10 Amperion, Inc. Method and device for frequency translation in powerline communications
US20060120399A1 (en) 2003-06-18 2006-06-08 Claret Jorge V B Method enabling multiple communication nodes to access a transmission means on an electrical grid
US20060291575A1 (en) 2003-07-03 2006-12-28 Berkman William H Power Line Communication System and Method
US20050020227A1 (en) 2003-07-22 2005-01-27 Masahiro Kumagawa High frequency variable gain amplification device, control device, high frequency variable gain frequency-conversion device, and communication device
US20050018668A1 (en) 2003-07-24 2005-01-27 Cheriton David R. Method and apparatus for processing duplicate packets
US20050031047A1 (en) * 2003-08-08 2005-02-10 Maltsev Alexander A. Adaptive multicarrier wireless communication system, apparatus and associated methods
US20050089061A1 (en) 2003-08-28 2005-04-28 Oleg Logvinov Joint powerline/ultra-wide band system
US20090022175A1 (en) 2003-09-23 2009-01-22 Arkados, Inc. Integrated universal network adapter
WO2005039070A2 (fr) 2003-10-15 2005-04-28 General Electric Company Compensation de nuls dans un systeme de communication par reseau electrique
US7221196B2 (en) 2003-12-05 2007-05-22 Aquantia Corporation Low-power low-voltage multi-level variable-resistor line driver
EP1548974A2 (fr) * 2003-12-25 2005-06-29 NTT DoCoMo, Inc. Système de radiocommunication, émetteur, récepteur et procédé de radiocommunication
US20050141473A1 (en) * 2003-12-27 2005-06-30 Kwang-Jae Lim Adaptive downlink packet transmission method in multicarrier CDMA system
US20050157670A1 (en) * 2004-01-16 2005-07-21 Nokia Corporation Multiple user adaptive modulation scheme for MC-CDMA
US20050174950A1 (en) 2004-02-09 2005-08-11 Sharp Laboratories Of America, Inc. Distributed network organization and topology discovery in ad-hoc network
US20050190826A1 (en) * 2004-02-26 2005-09-01 Alcatel Digital subscriber line modem with bitloading using channel condition model
US20050249245A1 (en) 2004-05-06 2005-11-10 Serconet Ltd. System and method for carrying a wireless based signal over wiring
US7269403B1 (en) * 2004-06-03 2007-09-11 Miao George J Dual-mode wireless and wired power line communications
WO2006017743A2 (fr) 2004-08-04 2006-02-16 Quadlogic Controls Corporation Procede et systeme de couplage de signaux radiofrequence a des lignes de puissance a moyenne tension avec un dispositif a accord automatique
US20060045066A1 (en) 2004-08-31 2006-03-02 Samsung Electronics Co., Ltd. Flooding method in ad-hoc network
US7391317B2 (en) 2004-09-08 2008-06-24 Satius, Inc. Apparatus and method for transmitting digital data over various communication media
US20060097574A1 (en) 2004-10-26 2006-05-11 Gidge Brett D Power line communications device and method of use
US20080001801A1 (en) 2004-11-19 2008-01-03 Nguyen Khiem Return-to-hold switching scheme for dac output stage
US20060126617A1 (en) 2004-12-15 2006-06-15 Cregg Daniel B Mesh network of intelligent devices communicating via powerline and radio frequency
WO2006074174A1 (fr) 2005-01-03 2006-07-13 Demian Martin Bande d'alimentation de courant alternatif presentant une repetition et une gestion de reseau
US20060176898A1 (en) 2005-02-10 2006-08-10 Asoka Usa Corporation Powerline communication system and method using coupler design for additional users
US20070268124A1 (en) 2005-04-04 2007-11-22 Berkman William H Power Line Communications System and Method
US20070002771A1 (en) 2005-06-21 2007-01-04 Berkman William H Power line communication rate limiting system and method
US20070008972A1 (en) 2005-07-11 2007-01-11 Mks Instruments, Inc. Address-transparent device and method
US20070025386A1 (en) 2005-07-27 2007-02-01 Neal Riedel Bandwidth management in a powerline network
US20070060151A1 (en) 2005-09-09 2007-03-15 Huitai Development Corporation Power Line Communication System
US20070076595A1 (en) 2005-09-30 2007-04-05 Samsung Electronics Co., Ltd. Power line communication method and apparatus
US7725096B2 (en) 2005-10-03 2010-05-25 Gigle Semiconductor Sl Multi-wideband communications over power lines
US7602220B1 (en) 2008-06-24 2009-10-13 Gigle Semiconductor, Ltd. Resistor-input transconductor including common-mode compensation

Non-Patent Citations (36)

* Cited by examiner, † Cited by third party
Title
"Broadband Powerline Communications Systems, A Background Brief," Australian Communications Authority, Sep. 2003.
Cheong Yui Wong; Cheng, R.S.; Lataief, K.B.; Murch, R.D.; , "Multiuser OFDM with adaptive subcarrier, bit, and power allocation," Selected Areas in Communications, IEEE Journal on , vol. 17, No. 10, pp. 1747-1758, Oct. 1999. *
Crussiere, M.; Baudais, J.-Y.; Helard, J.-F.; , "Robust and high-bit rate communications over PLC channels: a bit-loading multi-carrier spread-spectrum solution," Power Line Communications and Its Applications, 2005 International Symposium on , vol., No., pp. 37-41, Apr. 6-8, 2005. *
Digital Home Statndard, Universal Powerline Association (UPA), 2005.
Gardner, S., et al., HomePlug Standard Brings Networking to the Home, CSD, Dec. 2000.
HomePlug 1.0 Technology White Paper, HomePlug Powerline Alliance.
HomePlug AV White Paper, HomePlug Powerline Alliance, 2005.
International Preliminary Report on Patentability for PCT/US2007/015508, Jan. 15, 2009.
International Search Report for PCT/US2007/015508, Feb. 6, 2008.
Int'l Preliminary Report on Patentability, PCT/US2007/016736, Dated Jan. 27, 2009.
Int'l Search Report and Written Opinion, PCT/US09/48090, Dated Dec. 2, 2009.
Int'l Search Report and Written Opinion, PCT/US09/60478, Dated Dec. 3, 2009.
Int'l Search Report and Written Opinion, PCT/US09/60482, Dated Dec. 2, 2009.
Int'l Search Report and Written Opinion, PCT/US10/24125, Dated Apr. 15, 2010.
Int'l Search Report, PCT/GB2006/003665, Dated Mar. 12, 2007.
Int'l Search Report, PCT/GB2008/050364, Dated Aug. 19, 2008.
Int'l Search Report, PCT/GB2008/050365, Dated Aug. 13, 2008.
Int'l Search Report, PCT/US2008/00020, Dated Oct. 2, 2008.
Juttner, A., et al., Tree Based Broadcast in Ad Hoc Networks, Sep. 9, 2004, pp. 1-21, Errisson Research, Traffic Analysis and Network Performance Laboratory, Budapest, Hungary.
Kouvatsos, D., et al., Broadcasting Methods in Ad Hoc Networks: An Overview, Proceedings of the 3rd International Working conference on Performance Modelling and Evaluation of Heterogeneous Networks, Jul. 20, 2005, pp. 1-14.
Opera System Specification-Part 2, Open PLC European Research Alliance (OPERA), Jan. 31, 2006.
Opera Technology Specification-Part 1, Open PLC European Research Alliance (OPERA), Jan. 31, 2006.
PCT/EP2009/057284 Int'l Search Report and Written Opinion, Dated Aug. 28, 2009.
Powerline Communications Systems-Access/In-home & In-home/In-home Coexistence Mechanism-General Specifications, Universal Powerline Association (UPA), Jun. 27, 2005.
Powerstream Technology Background, Adaptive Networks, Inc., 2002.
Stelts, Michael, CEPCA Standard Summary, 2006.
Tang, C.; Stolpman, V.J.; , "Multiple users adaptive modulation schemes for MC-CDMA," Global Telecommunications Conference, 2004. GLOBECOM '04. IEEE , vol. 6, No., pp. 3823-3827 vol. 6, Nov. 29-Dec. 3, 2004. *
U.S. Appl. No. 12/581,547, filed Oct. 19, 2009, Danesh, Improved Wireline Transmission Circuit.
U.S. Appl. No. 12/639,900, filed Dec. 16, 2009, Bofill-Petit, Differential Gm-Boosting.
U.S. Appl. No. 12/705,182, filed Feb. 12, 2010, Rocamora, External AC-DC Coupling Unit For Communication Interfaces.
U.S. Appl. No. 12/770,586, filed Apr. 29, 2010, Hurwitz, Multi-Wideband Communications Over Power Lines.
U.S. Appl. No. 12/771,805, filed Apr. 30, 2010, Molina, Adaptive Multi-Carrier Code Division Multiple Access.
UPA-Universal Powerline Association, Frequently Asked Questions, date unknown.
Written Opinion, PCT/GB2006/003665, Dated Apr. 3, 2008.
Written Opinion, PCT/US2008/00020, Dated Apr. 14, 2008.
Yukitoshi, Sanada, A Multiuser Interference Cancellation Technique Utilizing Convolutional Colds and Orthogonal Multicarrier Modulation for Wireless Indoor Communications, IEEE Journal of Selected Areas in Communications, vol. 14, No. 8, Oct. 1996, pp. 1500-1508.

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8213895B2 (en) 2005-10-03 2012-07-03 Broadcom Europe Limited Multi-wideband communications over multiple mediums within a network
US20110194626A1 (en) * 2005-10-03 2011-08-11 Juan Carlos Riveiro Multi-Wideband Communications Over Power Lines
US20110205918A1 (en) * 2005-10-03 2011-08-25 Hurwitz Jonathan E D Apparatus for Power Line and Wireless Communications
US8538369B2 (en) 2005-10-03 2013-09-17 Broadcom Corporation Multi-wideband communications over power lines
US20100265992A1 (en) * 2006-07-06 2010-10-21 Jose Abad Molina Adaptative Multi-Carrier Code Division Multiple Access
US9705562B2 (en) 2006-07-25 2017-07-11 Broadcom Europe Limited Dual transformer communication interface
US8885814B2 (en) 2006-07-25 2014-11-11 Broadcom Europe Limited Feedback impedance control for driving a signal
US20090315700A1 (en) * 2006-07-25 2009-12-24 Jonathan Ephriam David Hurwitz Dual Transformer Communication Interface
US20080043992A1 (en) * 2006-07-25 2008-02-21 Gigle Semiconductor Inc. Feedback impedance control for driving a signal
US8571046B2 (en) 2006-11-21 2013-10-29 Broadcom Corporation Network repeater
US20100329274A1 (en) * 2006-11-21 2010-12-30 Veronica Romero Network Repeater
US20080159358A1 (en) * 2007-01-02 2008-07-03 David Ruiz Unknown Destination Traffic Repetition
US8213582B2 (en) 2008-03-14 2012-07-03 Broadcom Europe Limited Coupling signal processing circuitry with a wireline communications medium
US20090232286A1 (en) * 2008-03-14 2009-09-17 Gigle Semiconductor, Ltd. Coupling signal processing circuitry with a wireline communications medium
US20130010838A1 (en) * 2010-03-22 2013-01-10 Marvell Hispania, S.L. Communication node and procedure for various means of transmission
US8885689B2 (en) * 2010-03-22 2014-11-11 Marvell Hispania S. L. Communication node including transceivers transmitting on different types of transmission lines and performing data repeating functions

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